Understand and use properties of lines, angles, triangles and quadrilaterals. Recognise reflection and rotation symmetry, congruence and similarity. Use Pythagoras' theorem. Understand all the parts of a circle. Transform 2 dimensional shapes by a variety of rotations, reflections, translations and enlargements. Make constructions, including loci, using a straight edge and compasses. Find perimeters and areas of a variety of shapes, including triangles, parallelograms, trapeziums and circles. Find volumes of shapes based on prisms. See and print out the Geometry Fact Sheet on the Fact Sheets Page.